I had a ticket for a 1427 train on Friday and due to the disruption in the north of England / Scotland and my original train only going as far as Preston, instead of my booked Lancaster, I took it on myself to go an hour earlier at 1327. On trying to use my eticket at the station barriers at 1258, an hour and 29 minutes before what was my booked train, my ticket was rejected and I had to be let manually through the barriers. I was told it was because I was too early and a Supervisor had to be summoned to see if I could be allowed on to the platform. So, I wondered if anyone knew, with an advance ticket do the station barriers only accept a timed ticket if you try to get through the barriers, say possibly just within an hour of your booked train time?